Hitmonchan Moveset / Explanation

Hitmonchan @ Big Root / Leftovers
Role: Spinner
Ability: Iron Fist
EVs: 108 HP / 100 Atk / 100 Def / 200 Sp. Def
Careful Nature
Moveset:
 - Foresight
 - Rapid Spin
 - Drain Punch
 - Ice Punch

Pretty self-explanatory. Foresight is so that Ghost-types can't spinblock Hitmonchan. Drain Punch is STAB and provides reliable healing with Big Root. Leftovers can also be used. Ice Punch  hits Flying-types and, unlike Thunder-Punch, isn't resisted by Ground-types. The EVs are there for decent bulk and extra attack. You could also go with the standard 252 Atk / 252 Sp. Def (or Def) / 4 HP or go 252 Atk / 252 HP / 4 Sp. Def (or Def). If you want it to be more offensive, go with 252 Atk / 252 Spd / 4 HP. This moveset could also counter Doublade by using Foresight and then Drain Punch.